forwarder-helper.h

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/*
 * Copyright (C) 2018-2019 Zhiyi Zhang, Xinyu Ma
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v3.0. See the file LICENSE in the top level
 * directory for more details.
 */
#ifndef NDN_ENCODING_FORWARD_HELPER_H
#define NDN_ENCODING_FORWARD_HELPER_H

#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct interest_options{
  uint64_t lifetime;
  uint32_t nonce;
  uint8_t hop_limit;
  bool can_be_prefix;
  bool must_be_fresh;
}interest_options_t;

size_t
tlv_get_tlvar(uint8_t* buf, size_t buflen, uint32_t* var);

uint8_t*
tlv_get_type_length(uint8_t* buf, size_t buflen, uint32_t* type, uint32_t* length);

int
tlv_check_type_length(uint8_t* buf, size_t buflen, uint32_t type);

int
tlv_interest_get_header(uint8_t* interest,
                        size_t buflen,
                        interest_options_t* options,
                        uint8_t** name,
                        size_t* name_len);

int
tlv_data_get_name(uint8_t* data,
                  size_t buflen,
                  uint8_t** name,
                  size_t* name_len);

uint8_t*
tlv_interest_get_hoplimit_ptr(uint8_t* interest, size_t buflen);

uint64_t
tlv_get_uint(uint8_t* buf, size_t buflen);

#ifdef __cplusplus
}
#endif

#endif // NDN_ENCODING_FORWARD_HELPER_H